Merge "Make flag "showAllapps" persistent in PowerUsageSummary" into oc-dev

am: 4f02eebab8

Change-Id: Id02583309a3e547855b7ffc69e065c2293fb172e

src/com/android/settings/fuelgauge/PowerUsageSummary.java

@@ -79,6 +79,7 @@ public class PowerUsageSummary extends PowerUsageBase {
     private static final boolean USE_FAKE_DATA = false;
     private static final String KEY_APP_LIST = "app_list";
     private static final String KEY_BATTERY_HEADER = "battery_header";
+    private static final String KEY_SHOW_ALL_APPS = "show_all_apps";
     private static final int MAX_ITEMS_TO_LIST = USE_FAKE_DATA ? 30 : 10;
     private static final int MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP = 10;
 
@@ -131,6 +132,7 @@ public class PowerUsageSummary extends PowerUsageBase {
 
         mBatteryUtils = BatteryUtils.getInstance(getContext());
 
+        restoreSavedInstance(icicle);
         initFeatureProvider();
     }
 
@@ -154,6 +156,12 @@ public class PowerUsageSummary extends PowerUsageBase {
         }
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putBoolean(KEY_SHOW_ALL_APPS, mShowAllApps);
+    }
+
     @Override
     public boolean onPreferenceTreeClick(Preference preference) {
         if (KEY_BATTERY_HEADER.equals(preference.getKey())) {
@@ -262,6 +270,13 @@ public class PowerUsageSummary extends PowerUsageBase {
         }
     }
 
+    @VisibleForTesting
+    void restoreSavedInstance(Bundle savedInstance) {
+        if (savedInstance != null) {
+            mShowAllApps = savedInstance.getBoolean(KEY_SHOW_ALL_APPS, false);
+        }
+    }
+
     private void addNotAvailableMessage() {
         final String NOT_AVAILABLE = "not_available";
         Preference notAvailable = getCachedPreference(NOT_AVAILABLE);